Method for performing interleaving and interleaver

Abstract

A method for performing interleaving by a communication device may comprise the steps of: writing an input bit sequence in the column direction of a memory matrix; and reading the written bit sequence in the row direction of the memory matrix, wherein the writing step comprises a step of writing, for each row comprising only systematic bits in the input bit sequence, the systematic bits by using a method in which the priorities of the systematic bits are determined on the basis of a predetermined shuffling pattern. The communication device is capable of communicating with at least one of another communication device, a communication device related to an autonomous driving vehicle, a base station or a network.

1 . A method of performing interleaving by a communication device, the method comprising:
 writing an input bit sequence in a column direction of a memory matrix; and   reading the written bit sequence in a row direction of the memory matrix,   wherein the writing comprises writing systematic bits for each row consisting of only the systematic bits in the input bit sequence by determining priorities of the systematic bits based on a predetermined shuffling pattern.   
     
     
         2 . The method of  claim 1 , wherein the input bit sequence has a predetermined redundancy version (RV) index. 
     
     
         3 . The method of  claim 2 , wherein the predetermined RV index is one of indices except index 0. 
     
     
         4 . The method of  claim 1 , wherein the predetermined shuffling pattern comprises a pattern for randomly determining the priorities of the systematic bits for each row consisting of only the systematic bits. 
     
     
         5 . The method of  claim 1 , wherein the shuffling pattern comprises a pattern for reversing previously determined priorities for each row consisting of only the systematic bits. 
     
     
         6 . The method of  claim 1 , wherein the writing comprises writing the input bit sequence in the column direction of the memory matrix until a given maximum column index, moving to a column index of a next row, and continuing the writing. 
     
     
         7 . A communication device comprising an interleaver configured to:
 write an input bit sequence in a column direction of a memory matrix; and   read the written bit sequence in a row direction of the memory matrix,   wherein when writing the input bit sequence, the interleaver is configured to write systematic bits for each row consisting of only the systematic bits in the input bit sequence by determining priorities of the systematic bits based on a predetermined shuffling pattern.   
     
     
         8 . The communication device of  claim 7 , wherein the input bit sequence has a predetermined redundancy version (RV) index. 
     
     
         9 . The communication device of  claim 8 , wherein the predetermined RV index is one of indices except index 0. 
     
     
         10 . The communication device of  claim 7 , wherein the predetermined shuffling pattern comprises a pattern for randomly determining the priorities of the systematic bits for each row consisting of only the systematic bits. 
     
     
         11 . The communication device of  claim 7 , wherein the shuffling pattern comprises a pattern for reversing previously determined priorities for each row consisting of only the systematic bits. 
     
     
         12 . The communication device of  claim 7 , wherein the interleaver is configured to write the input bit sequence in the column direction of the memory matrix until a given maximum column index, move to a column index of a next row, and continue the writing. 
     
     
         13 . The communication device of  claim 7 , wherein the communication device is capable of communicating with at least one of another communication device, a communication device related to an autonomous driving vehicle, a base station or a network.